2YHS

Structure of the E. coli SRP receptor FtsY


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.6 Å
  • R-Value Free: 0.220 
  • R-Value Work: 0.178 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Lipids Trigger a Conformational Switch that Regulates Signal Recognition Particle (Srp)-Mediated Protein Targeting.

Stjepanovic, G.Kapp, K.Bange, G.Graf, C.Parlitz, R.Wild, K.Mayer, M.P.Sinning, I.

(2011) J.Biol.Chem. 286: 23489

  • DOI: 10.1074/jbc.M110.212340

  • PubMed Abstract: 
  • Co-translational protein targeting to the membrane is mediated by the signal recognition particle and its receptor (FtsY). Their homologous GTPase domains interact at the membrane and form a heterodimer in which both GTPases are activated. The prereq ...

    Co-translational protein targeting to the membrane is mediated by the signal recognition particle and its receptor (FtsY). Their homologous GTPase domains interact at the membrane and form a heterodimer in which both GTPases are activated. The prerequisite for protein targeting is the interaction of FtsY with phospholipids. However, the mechanism of FtsY regulation by phospholipids remained unclear. Here we show that the N terminus of FtsY (A domain) is natively unfolded in solution and define the complete membrane-targeting sequence. We show that the membrane-targeting sequence is highly dynamic in solution, independent of nucleotides and directly responds to the density of anionic phospholipids by a random coil-helix transition. This conformational switch is essential for tethering FtsY to membranes and activates the GTPase for its subsequent interaction with the signal recognition particle. Our results underline the dynamics of lipid-protein interactions and their importance in the regulation of protein targeting and translocation across biological membranes.


    Organizational Affiliation

    Biochemie Zentrum (BZH), University of Heidelberg, INF 328, 69120 Heidelberg, Germany.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
CELL DIVISION PROTEIN FTSY
A
503Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: ftsY
Find proteins for P10121 (Escherichia coli (strain K12))
Go to UniProtKB:  P10121
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
EDO
Query on EDO

Download SDF File 
Download CCD File 
A
1,2-ETHANEDIOL
ETHYLENE GLYCOL
C2 H6 O2
LYCAIKOWRPUZTN-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.6 Å
  • R-Value Free: 0.220 
  • R-Value Work: 0.178 
  • Space Group: P 21 21 2
Unit Cell:
Length (Å)Angle (°)
a = 79.358α = 90.00
b = 108.412β = 90.00
c = 31.902γ = 90.00
Software Package:
Software NamePurpose
PHENIXrefinement
PHENIXphasing
MOSFLMdata reduction
SCALAdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2011-05-18
    Type: Initial release
  • Version 1.1: 2011-06-30
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance